Fasten the drive shaft to the Jag' IRS?
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  1. #1
    Rods 'n' Sods Junkie
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    Fasten the drive shaft to the Jag' IRS?

    Is this how you fasten the drive shaft on to the Jaguar IRS? Simply insert a grade 8 bolt in each hole, nut on the back and then fasten?

    Won't this put enormous amounts of force on those 4 bolts? I have got the rear end of the drive shaft custom made, but admits the conversion of the Jag IRS to a chevy pinion would probably been a better route to go. However now that I have the excisting solution, I want to use it.
    Have I missed someting here?





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    Official RnS Addict bigyellataxi's Avatar
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    Same as Ford did it on MANY cars...


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    Official RnS Addict trevd's Avatar
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    the forces are not only transmited through the bolts, the mating faces clamped by the bolts take a lot of the torsional force so as long as its done up tight and no corrosion exists between the mating faces its not a problem. you could probably put 3000hp through this type of joint with no problem. just think about a torque convertor, its only held on with 4 3/8 bolts.

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  6. #4
    Rods 'n' Sods Junkie
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    Ok. Thanks. Good to know I'm not on the wrong track!
    Do you know where I can get those bolts? I tried locally here in Norway, but the price was 30£ for 4 bolts and nuts...

    Is it ordinary 3/8" grade 8 bolts they use? I can get 12.9 M10 millimeter bolts locally for free at my work and am thinking about drilling out the holes from 3/8 to 10 mm (app 0,5 mm) and use those. 12,9mm bolts are app the same as grade 8 unf bolts.
    Good judgement comes from experience, and a lot of that comes from bad judgement.

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    Official RnS Addict bigyellataxi's Avatar
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    I would say drill it, but someone else will say not to...

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    Pass the lump hammer Blown 100e's Avatar
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    I would be happy to open up the holes to take a 10mm bolt as its only 0.5mm, 0.020" providing there's plenty of material left on the flange

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    Official RnS Addict trevd's Avatar
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    the bolts, either 3/8 or metric will work but you need to ensure that the part of the bolt in both holes is unthreaded. also a unf bolt will give more force than a standard metric bolt as the pitch of the thread is smaller. if you want to use the correct bolts let me know i can source them and ship them to you at cost (probably more to ship than the bolts will cost me).

  10. #8
    Official RnS Addict trevd's Avatar
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    picked up the bolts today, will get them in the post asap.if anyone else needs imperial fasteners look at any local bolt/ fastener supplier, i have one near me that can sort me out 95% of the time.

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